Define text in product view based on product

I want to define a specific text for a product. What I mean:

- When you go to product A, it displays: price : 00,00 per person
- When you go to product B, it displays: price for 5 - 9 persons: 00,00 per person

Why? I have got only 4 / 5 products on my website, which are photoshoots. But one is per person, and another one based on the amount of people.

Product per person: http://webshop.fotoshootoplocatie.nl/in ... duct_id=49
Product per multiple persons: http://webshop.fotoshootoplocatie.nl/in ... duct_id=52

And click on the tab Prijs informatie to see that I already managed to change it with the options php code (i have used the code to display more information based on that the product has got options).

But is it possible to define it based on product id?